Influence of Height of Bionic Hexagonal Texture on Tactile Perception

doi:10.1007/s12204-023-2648-1

Abstract

Abstract: It is significant to process textures with special functions similar to animal surfaces based on bionics and improve the friction stability and contact comfort of contact surfaces for the surface texture design of tactile products. In this paper, a bionic hexagonal micro-convex texture was prepared on an acrylic surface by laser processing. The friction mechanism of a finger touching the bionic hexagonal micro-convex texture under different touch speeds and pressures, and the effect of the height of the texture on tactile perception were investigated by finite element, subjective evaluation, friction, and EEG tests. The results showed that the deformation friction was the main friction component when the finger touched the bionic hexagonal texture, and the slipperiness and friction factor showed a significant negative correlation. As the touch speed decreased or the touch force increased, the hysteresis friction of the fingers as well as the interlocking friction increased, and the slipperiness perception decreased. The bionic hexagonal texture with higher convexity caused a higher friction factor, lower slipperiness perception, and lower P300 peak. Hexagonal textures with lower convexity, lower friction factor, and higher slipperiness perception required greater brain attentional resources and intensity of tactile information processing during tactile perception.

Key words: bionic hexagonal texture, tactile perception, friction, event-related potentials, subjective evaluation

摘要： 从仿生学角度出发，加工出类似动物表面具有特殊功能的纹理，进而提高接触表面摩擦稳定性和接触舒适性对于触肤产品的表面纹理设计具有重要的指导意义。本文采用激光加工方式在亚克力表面制备了仿生六边形微凸纹理。通过有限元、认知行为学、摩擦学和脑电试验研究了不同触摸速度、压力条件下手指触摸仿生六边形微凸纹理的摩擦机理，探究了仿生六边形微凸纹理高度变化对于摩擦触觉感知的影响。研究表明形变摩擦力是手指触摸仿生六边形微凸纹理的主要摩擦分量，滑溜感和摩擦因数呈现显著负相关关系。随着触摸速度减小或触摸压力增大，手指的滞后摩擦以及互锁摩擦呈增大趋势，滑溜感呈减小趋势。触摸凸起高的仿生六边形纹理引起的摩擦因数大、滑溜感小、P300峰值低。纹理凸起低、摩擦因数小、滑溜感高的六边形微凸纹理在触觉感知过程中需要较大的大脑注意资源和触感信息加工强度。

关键词: 仿生六边形微凸纹理，触感，摩擦，事件相关电位，主观认知

CLC Number:

TH117.1
Q811

Wang Lei, Zhu Yuqin, Fang Xingxing, Wang Shuai, Tang Wei. Influence of Height of Bionic Hexagonal Texture on Tactile Perception[J]. J Shanghai Jiaotong Univ Sci, 2025, 30(3): 463-471.

References

[1] ZHANG L. Materials touch use in product design [J]. Design, 2015(15): 112-113 (in Chinese).

[2] OKAMOTO S, NAGANO H, YAMADA Y. Psychophysical dimensions of tactile perception of textures [J]. IEEE Transactions on Haptics, 2013, 6(1): 81-93.

[3] CRAMPHORN L, WARD-CHERRIER B, LEPORA N F. Addition of a biomimetic fingerprint on an artificial fingertip enhances tactile spatial acuity [J]. IEEE Robotics and Automation Letters, 2017, 2(3): 1336-1343.

[4] CESINI I, NDENGUE J D, CHATELET E, et al. Correlation between friction-induced vibrations and tactile perception during exploration tasks of isotropic and periodic textures [J]. Tribology International, 2018, 120: 330-339.

[5] TANG W, ZHANG M, YANG L, et al. Tactile perception of rough surface using friction and electroencephalography methods[J]. Tribology, 2022, 42(4): 764-774 (in Chinese).

[6] LIU T F, LI Y Y, LI W, et al. Influence of surface feature height of deterministic texture on tactile perception of fingertip [J]. Journal of Southwest Jiaotong University, 2020, 55(2): 372-378 (in Chinese).

[7] TYMMS C, ZORIN D, GARDNER E P. Tactile perception of the roughness of 3D-printed textures [J]. Journal of Neurophysiology, 2018, 119(3): 862-876.

[8] YAN D F, LIU Z A, PAN W H, et al. Research status on the fabrication and application of multifunctional superhydrophobic surfaces [J]. Surface Technology, 2021, 50(5): 1-19 (in Chinese).

[9] TUO Y J, CHEN W P, ZHANG H F, et al. One-step hydrothermal method to fabricate drag reduction superhydrophobic surface on aluminum foil [J]. Applied Surface Science, 2018, 446: 230-235.

[10] HU J. The flexible ECG microelectrode arrays based on gecko bionic structure [D]. Xi’an: Xidian University, 2015 (in Chinese).

[11] WU X. Research on the bio-inspired dry adhesive mechanism and the wall-climbing robot [D]. Hefei: University of Science and Technology of China, 2015 (in Chinese).

[12] MU Q. Research on tribological properties of bionic hexagonal pillar-textured surfaces[D]. Nanjing: Nanjing University of Aeronautics and Astronautics, 2013 (in Chinese).

[13] DROTLEF D M, STEPIEN L, KAPPL M, et al. Insights into the adhesive mechanisms of tree frogs using artificial mimics [J]. Advanced Functional Materials, 2013, 23(9): 1137-1146.

[14] FEDERLE W, BARNES W J P, BAUMGARTNER W, et al. Wet but not slippery: Boundary friction in tree frog adhesive toe pads [J]. Journal of the Royal Society, Interface, 2006, 3(10): 689-697.

[15] LI W, JIANG Y S, PANG Q, et al. Discomfort perception on human skin among different gender during friction contact [J]. Tribology, 2012, 32(3): 227-232 (in Chinese).

[16] OLAUSSON H, WESSBERG J, KAKUDA N. Tactile directional sensibility: Peripheral neural mechanisms in man [J]. Brain Research, 2000, 866(1/2): 178-187.

[17] LIU X, YUE Z, CAI Z, et al. Quantifying touch–feel perception: Tribological aspects [J]. Measurement Science and Technology, 2008, 19(8): 084007.

[18] VAN KUILENBURG J, MASEN M A, VAN DER HEIDE E. A review of fingerpad contact mechanics and friction and how this affects tactile perception [J]. Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, 2015, 229(3): 243-258.

[19] BERGMANN TIEST W M. Tactual perception of material properties [J]. Vision Research, 2010, 50(24): 2775-2782.

[20] MORLEY J W, GOODWIN A W, DARIAN-SMITH I. Tactile discrimination of gratings [J]. Experimental Brain Research, 1983, 49(2): 291-299.

[21] WU J Z, WELCOME D E, KRAJNAK K, et al. Finite element analysis of the penetrations of shear and normal vibrations into the soft tissues in a fingertip [J]. Medical Engineering & Physics, 2007, 29(6): 718-727.

[22] YAMAGUCHI A, ATKESON C G. Tactile behaviors with the vision-based tactile sensor FingerVision [J]. International Journal of Humanoid Robotics, 2019, 16(3): 1940002.

[23] TOMLINSON S E, CARRÉ M J, LEWIS R, et al. Human finger contact with small, triangular ridged surfaces [J]. Wear, 2011, 271(9/10): 2346-2353.

[24] ADAMS M J, BRISCOE B J, JOHNSON S A. Friction and lubrication of human skin [J]. Tribology Letters, 2007, 26(3): 239-253.

[25] WOLFRAM L J. Friction of skin[J]. Journal of the Society of Cosmetic Chemists, 1983, 34(8): 465-476.

[26] ADAMS M J, BRISCOE B J, WEE T K. The differential friction effect of keratin fibres [J]. Journal of Physics D: Applied Physics, 1990, 23(4): 406-414.

[27] TANG W, CHEN N X, ZHANG J K, et al. Characterization of tactile perception and optimal exploration movement [J]. Tribology Letters, 2015, 58(2): 28.

[28] NACHT S, -A CLOSE J, YEUNG D, et al. Skin friction coefficient: Changes induced by skin hydration and emollient application and correlation with perceived skin feel [J]. Journal of the Society of Cosmetic Chemists, 1981, 32(2): 55-65.

[29] FAGIANI R, MASSI F, CHATELET E, et al. Tactile perception by friction induced vibrations [J]. Tribology International, 2011, 44(10): 1100-1110.

[30] TANG W, ZHANG M M, CHEN G F, et al. Investigation of tactile perception evoked by ridged texture using ERP and non-linear methods [J]. Frontiers in Neuroscience, 2021, 15: 676837.

[31] GRAY H M, AMBADY N, LOWENTHAL W T, et al. P300 as an index of attention to self-relevant stimuli [J]. Journal of Experimental Social Psychology, 2004, 40(2): 216-224.]